Question

How to check if an element is removed from a set in Swift

Answer 1

import Foundation

var numbers: Set<Int> = [1, 2, 3, 4, 5, 6]

if let removed = numbers.remove(7) {
    print("Removed \(removed)")
} else {
    print("Element not found")
}
print(numbers) 

if let removed = numbers.remove(5) {
    print("Removed \(removed)")
} else {
    print("Element not found")
}
print(numbers) 

 
 
/*
run:
 
Element not found
[3, 2, 4, 6, 1, 5]
Removed 5
[3, 2, 4, 6, 1]
 
*/

 

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